diff --git a/acts.spec b/acts.spec
new file mode 100644
index 00000000000..1452dc8d260
--- /dev/null
+++ b/acts.spec
@@ -0,0 +1,123 @@
+### RPM external acts v44.0.1
+## INCLUDE cpp-standard
+## INCLUDE microarch_flags
+## INCLUDE compilation_flags
+## INCLUDE compilation_flags_lto
+## INCLUDE cuda-flags
+## INCLUDE rocm-flags
+
+%define tag         2d4cf6938
+%define branch      cms/%{realversion}
+%define github_user cms-externals
+Source: git+https://github.com/%{github_user}/%{n}.git?obj=%{branch}/%{tag}&export=%{n}-%{realversion}&output=/%{n}-%{realversion}-%{tag}.tgz
+Source99: scram-tools.file/tools/eigen/env
+
+# Do not build the Acts and Traccc tests
+%define build_test 0
+
+# ROCm support is not yet building correctly
+%define without_rocm 1
+
+BuildRequires: cmake
+Requires: boost
+Requires: dd4hep
+Requires: eigen
+Requires: expat
+Requires: geant4
+Requires: json
+Requires: python3
+Requires: root
+Requires: xerces-c
+Requires: zlib
+%{!?without_cuda:Requires: cuda}
+%{!?without_rocm:Requires: rocm}
+%if %{build_test}
+# These are ony used to build the examples and unit tests
+Requires: hepmc3
+Requires: tbb
+%endif
+
+%prep
+%setup -n %{n}-%{realversion}
+
+%build
+rm -rf ../build
+mkdir ../build
+cd ../build
+source %{_sourcedir}/env
+
+%define cuda_enabled %{?without_cuda:OFF}%{!?without_cuda:ON}
+%define rocm_enabled %{?without_rocm:OFF}%{!?without_rocm:ON}
+
+# Notes:
+#   - gcc-ar and gcc-ranlib are needed to build static libraries with LTO support.
+#   - building with RPATH enabled is necessary to build and run the tests; set CMAKE_SKIP_INSTALL_RPATH to strip the RPATH
+#     information after installing the libraries.
+#   - HIP/ROCm support is not yet working correctly.
+
+cmake ../%{n}-%{realversion} \
+  -DCMAKE_PREFIX_PATH="%{cmake_prefix_path}" \
+  -DCMAKE_CXX_COMPILER="$GCC_ROOT/bin/g++" \
+  -DCMAKE_CXX_STANDARD="%{cms_cxx_standard}" \
+  -DCMAKE_CXX_FLAGS="-fPIC $CMS_EIGEN_CXX_FLAGS %{arch_build_flags} %{selected_microarch} %{lto_build_flags}" \
+  -DCMAKE_AR="$GCC_ROOT/bin/gcc-ar" \
+  -DCMAKE_RANLIB="$GCC_ROOT/bin/gcc-ranlib" \
+  -DCMAKE_BUILD_TYPE="Release" \
+  -DCMAKE_INSTALL_PREFIX="%{i}" \
+  -DCMAKE_SKIP_INSTALL_RPATH="ON" \
+  -DCMAKE_CUDA_ARCHITECTURES="$(echo %{cuda_arch} | sed -e 's/ \+/;/g')" \
+  -DCMAKE_CUDA_FLAGS="-Wno-deprecated-gpu-targets --threads 0" \
+  -DCMAKE_HIP_ARCHITECTURES="$(echo %{rocm_archs} | sed -e 's/ \+/;/g')" \
+  -DAMDGPU_TARGETS="$(echo %{rocm_archs} | sed -e 's/ \+/;/g')" \
+  -DBUILD_SHARED_LIBS="ON" \
+  -DACTS_NLOHMANNJSON_SOURCE="" \
+  -DACTS_USE_SYSTEM_NLOHMANN_JSON="ON" \
+  -DACTS_BUILD_PLUGIN_ACTSVG="ON" \
+  -DACTS_BUILD_PLUGIN_JSON="ON" \
+  -DACTS_BUILD_PLUGIN_ROOT="ON" \
+  -DACTS_BUILD_PLUGIN_DD4HEP="ON" \
+  -DACTS_BUILD_PLUGIN_GEANT4="ON" \
+  -DACTS_BUILD_PLUGIN_TRACCC="ON" \
+  -DACTS_ENABLE_LOG_FAILURE_THRESHOLD="ON" \
+  -DCOVFIE_PLATFORM_CPU="ON" \
+  -DCOVFIE_PLATFORM_CUDA="%{cuda_enabled}" \
+  -DCOVFIE_PLATFORM_HIP="%{rocm_enabled}" \
+  -DDETRAY_SETUP_NLOHMANN="ON" \
+  -DDETRAY_USE_SYSTEM_NLOHMANN="ON" \
+  -DDETRAY_BUILD_HOST="ON" \
+  -DDETRAY_BUILD_CUDA="%{cuda_enabled}" \
+  -DDETRAY_BUILD_HIP="%{rocm_enabled}" \
+  -DTRACCC_BUILD_CUDA="%{cuda_enabled}" \
+  -DTRACCC_BUILD_HIP="%{rocm_enabled}" \
+  -DTRACCC_SETUP_THRUST="%{cuda_enabled}" \
+  -DTRACCC_SETUP_ROCTHRUST="%{rocm_enabled}" \
+  -DTRACCC_USE_SYSTEM_THRUST="%{cuda_enabled}" \
+  -DTRACCC_USE_SYSTEM_ROCTHRUST="%{rocm_enabled}" \
+  -DVECMEM_BUILD_CUDA_LIBRARY="%{cuda_enabled}" \
+  -DVECMEM_BUILD_HIP_LIBRARY="%{rocm_enabled}" \
+%if %{build_test}
+  -DACTS_BUILD_UNITTESTS="ON" \
+  -DACTS_BUILD_INTEGRATIONTESTS="ON" \
+  -DACTS_BUILD_EXAMPLES_PYTHON_BINDINGS="ON" \
+  -DTRACCC_BUILD_TESTING="ON" \
+%endif
+  -L
+
+make %{makeprocesses} VERBOSE=1
+
+%install
+cd ../build
+make install VERBOSE=1
+
+%if %{build_test}
+# download the traccc test data file to the .../data directory
+mkdir -p %{i}/data
+./_deps/traccc-src/data/traccc_data_get_files.sh -o %{i}/data
+%endif
+
+# remove the scripts used to set the Acts environment variables
+rm %{i}/bin/this_acts.sh
+rm %{i}/bin/this_acts_withdeps.sh
+
+%post
+%{relocateConfig}lib64/cmake/*/*.cmake
diff --git a/cmssw-tools.spec b/cmssw-tools.spec
index 19abc3797b2..4ae9ce2b035 100644
--- a/cmssw-tools.spec
+++ b/cmssw-tools.spec
@@ -8,6 +8,7 @@ Requires: AXOL1TL
 Requires: TOPO
 Requires: CICADA
 Requires: OpenBLAS
+Requires: acts
 Requires: celeritas
 Requires: crab
 Requires: cmssw-wm-tools
diff --git a/scram-tools.file/tools/acts/acts-common.xml b/scram-tools.file/tools/acts/acts-common.xml
new file mode 100644
index 00000000000..212f34bc1a2
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-common.xml
@@ -0,0 +1,11 @@
+<tool name="acts-common" version="@TOOL_VERSION@" revision="1">
+  <!-- common tool that defines the directories and common flags for all Acts tool -->
+  <info url="https://acts.readthedocs.io/en/latest/index.html"/>
+  <flags CXXFLAGS="-Wno-missing-braces"/>
+  <flags CXXFLAGS="-DACTS_ENABLE_LOG_FAILURE_THRESHOLD"/>
+  <client>
+    <environment name="@TOOL_BASE@" default="@TOOL_ROOT@"/>
+    <environment name="LIBDIR" default="$@TOOL_BASE@/lib64"/>
+    <environment name="INCLUDE" default="$@TOOL_BASE@/include"/>
+  </client>
+</tool>
diff --git a/scram-tools.file/tools/acts/acts-core.xml b/scram-tools.file/tools/acts/acts-core.xml
new file mode 100644
index 00000000000..ad7e5f708a3
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-core.xml
@@ -0,0 +1,7 @@
+<tool name="acts-core" version="@TOOL_VERSION@" revision="1">
+  <info url="https://acts.readthedocs.io/en/latest/index.html"/>
+  <lib name="ActsCore"/>
+  <use name="acts-common"/>
+  <use name="boost_header"/>
+  <use name="eigen"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/acts-covfie.xml b/scram-tools.file/tools/acts/acts-covfie.xml
new file mode 100644
index 00000000000..01da6e60484
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-covfie.xml
@@ -0,0 +1,6 @@
+<tool name="acts-covfie" version="@TOOL_VERSION@" revision="1">
+  <info url="https://acts.readthedocs.io/en/latest/plugins/plugins.html"/>
+  <lib name="ActsPluginCovfie"/>
+  <use name="acts-core"/>
+  <use name="covfie"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/acts-dd4hep.xml b/scram-tools.file/tools/acts/acts-dd4hep.xml
new file mode 100644
index 00000000000..c78f7e8d4ea
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-dd4hep.xml
@@ -0,0 +1,18 @@
+<tool name="acts-dd4hep" version="@TOOL_VERSION@" revision="1">
+  <info url="https://acts.readthedocs.io/en/latest/plugins/dd4hep.html"/>
+  <lib name="ActsPluginDD4hep"/>
+  <use name="acts-core"/>
+  <use name="acts-root"/>
+  <use name="dd4hep-core"/>
+  <use name="rootcling"/>
+  <use name="rootcore"/>
+  <use name="rootgeom"/>
+  <use name="roothistmatrix"/>
+  <use name="rootimt"/>
+  <use name="rootmath"/>
+  <use name="rootphysics"/>
+  <use name="rootrint"/>
+  <use name="rootrio"/>
+  <use name="rootthread"/>
+  <use name="xerces-c"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/acts-detray.xml b/scram-tools.file/tools/acts/acts-detray.xml
new file mode 100644
index 00000000000..224e2f0da67
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-detray.xml
@@ -0,0 +1,8 @@
+<tool name="acts-detray" version="@TOOL_VERSION@" revision="1">
+  <info url="https://github.com/acts-project/detray"/>
+  <lib name="ActsPluginDetray"/>
+  <use name="acts-core"/>
+  <use name="actsvg"/>
+  <use name="detray"/>
+  <use name="vecmem"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/acts-geant4.xml b/scram-tools.file/tools/acts/acts-geant4.xml
new file mode 100644
index 00000000000..8bf051f99e8
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-geant4.xml
@@ -0,0 +1,12 @@
+<tool name="acts-geant4" version="@TOOL_VERSION@" revision="1">
+  <info url="https://acts.readthedocs.io/en/latest/plugins/geant4.html"/>
+  <lib name="ActsPluginGeant4"/>
+  <use name="acts-core"/>
+  <use name="acts-root"/>
+  <use name="clhep"/>
+  <use name="expat"/>
+  <use name="geant4core"/>
+  <use name="geant4vis"/>
+  <use name="xerces-c"/>
+  <use name="zlib"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/acts-json.xml b/scram-tools.file/tools/acts/acts-json.xml
new file mode 100644
index 00000000000..a629c3147fc
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-json.xml
@@ -0,0 +1,6 @@
+<tool name="acts-json" version="@TOOL_VERSION@" revision="1">
+  <info url="https://acts.readthedocs.io/en/latest/plugins/json.html"/>
+  <lib name="ActsPluginJson"/>
+  <use name="acts-core"/>
+  <use name="json"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/acts-root.xml b/scram-tools.file/tools/acts/acts-root.xml
new file mode 100644
index 00000000000..ba7926ab5b1
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-root.xml
@@ -0,0 +1,13 @@
+<tool name="acts-root" version="@TOOL_VERSION@" revision="1">
+  <info url="https://acts.readthedocs.io/en/latest/plugins/root.html"/>
+  <lib name="ActsPluginRoot"/>
+  <use name="acts-core"/>
+  <use name="rootcling"/>
+  <use name="rootcore"/>
+  <use name="rootgeom"/>
+  <use name="roothistmatrix"/>
+  <use name="rootimt"/>
+  <use name="rootmathcore"/>
+  <use name="rootrio"/>
+  <use name="rootthread"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/acts-svg.xml b/scram-tools.file/tools/acts/acts-svg.xml
new file mode 100644
index 00000000000..ecae63eb1df
--- /dev/null
+++ b/scram-tools.file/tools/acts/acts-svg.xml
@@ -0,0 +1,6 @@
+<tool name="acts-svg" version="@TOOL_VERSION@" revision="1">
+  <info url="https://acts.readthedocs.io/en/latest/plugins/plugins.html"/>
+  <lib name="ActsPluginActSVG"/>
+  <use name="acts-core"/>
+  <use name="actsvg"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/actsvg.xml b/scram-tools.file/tools/acts/actsvg.xml
new file mode 100644
index 00000000000..7bde1e38a69
--- /dev/null
+++ b/scram-tools.file/tools/acts/actsvg.xml
@@ -0,0 +1,6 @@
+<tool name="actsvg" version="@TOOL_VERSION@" revision="1">
+  <info url="https://github.com/acts-project/actsvg/blob/main/README.md"/>
+  <lib name="actsvg_core"/>
+  <lib name="actsvg_meta"/>
+  <use name="acts-common"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/covfie.xml b/scram-tools.file/tools/acts/covfie.xml
new file mode 100644
index 00000000000..cb7e1127b30
--- /dev/null
+++ b/scram-tools.file/tools/acts/covfie.xml
@@ -0,0 +1,4 @@
+<tool name="covfie" version="@TOOL_VERSION@" revision="1">
+  <info url="https://covfie.readthedocs.io/en/latest/"/>
+  <use name="acts-common"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/detray.xml b/scram-tools.file/tools/acts/detray.xml
new file mode 100644
index 00000000000..1c44e5e1ac4
--- /dev/null
+++ b/scram-tools.file/tools/acts/detray.xml
@@ -0,0 +1,7 @@
+<tool name="detray" version="@TOOL_VERSION@" revision="1">
+  <info url="https://github.com/acts-project/detray/blob/main/README.md"/>
+  <use name="acts-common"/>
+  <use name="json"/>
+  <flags CXXFLAGS="-DDETRAY_ALGEBRA_ARRAY"/>
+  <flags CXXFLAGS="-DDETRAY_CUSTOM_SCALARTYPE=double"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/traccc-cuda.xml b/scram-tools.file/tools/acts/traccc-cuda.xml
new file mode 100644
index 00000000000..ff22808a092
--- /dev/null
+++ b/scram-tools.file/tools/acts/traccc-cuda.xml
@@ -0,0 +1,8 @@
+<tool name="traccc-cuda" version="@TOOL_VERSION@" revision="1">
+  <info url="https://github.com/acts-project/traccc/"/>
+  <lib name="traccc_cuda"/>
+  <use name="acts-core"/>
+  <use name="cuda"/>
+  <use name="vecmem"/>
+  <use name="vecmem-cuda"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/traccc-io.xml b/scram-tools.file/tools/acts/traccc-io.xml
new file mode 100644
index 00000000000..6d5c28d6b16
--- /dev/null
+++ b/scram-tools.file/tools/acts/traccc-io.xml
@@ -0,0 +1,10 @@
+<tool name="traccc-io" version="@TOOL_VERSION@" revision="1">
+  <info url="https://github.com/acts-project/traccc/"/>
+  <lib name="traccc_io"/>
+  <use name="acts-core"/>
+  <use name="acts-json"/>
+  <use name="traccc"/>
+  <client>
+    <environment name="@TOOL_BASE@" default="@TOOL_ROOT@"/>
+  </client>
+</tool>
diff --git a/scram-tools.file/tools/acts/traccc-performance.xml b/scram-tools.file/tools/acts/traccc-performance.xml
new file mode 100644
index 00000000000..1029e59824d
--- /dev/null
+++ b/scram-tools.file/tools/acts/traccc-performance.xml
@@ -0,0 +1,16 @@
+<tool name="traccc-performance" version="@TOOL_VERSION@" revision="1">
+  <info url="https://github.com/acts-project/traccc/"/>
+  <lib name="traccc_performance"/>
+  <use name="acts-core"/>
+  <use name="cuda"/>
+  <use name="traccc"/>
+  <use name="traccc-io"/>
+  <use name="vecmem"/>
+  <use name="rootcling"/>
+  <use name="roothistmatrix"/>
+  <use name="rootimt"/>
+  <use name="rootmathcore"/>
+  <use name="rootcore"/>
+  <use name="rootthread"/>
+  <use name="rootrio"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/traccc.xml b/scram-tools.file/tools/acts/traccc.xml
new file mode 100644
index 00000000000..c37725cab14
--- /dev/null
+++ b/scram-tools.file/tools/acts/traccc.xml
@@ -0,0 +1,12 @@
+<tool name="traccc" version="@TOOL_VERSION@" revision="1">
+  <info url="https://github.com/acts-project/traccc/"/>
+  <lib name="traccc_core"/>
+  <use name="acts-common"/>
+  <use name="covfie"/>
+  <use name="detray"/>
+  <use name="vecmem"/>
+  <flags CXXFLAGS="-DALGEBRA_PLUGINS_INCLUDE_ARRAY"/>
+  <flags CXXFLAGS="-DTRACCC_CUSTOM_SCALARTYPE=double"/>
+  <flags CXXFLAGS="-DTRACCC_HAVE_NVTX"/>
+  <flags CXXFLAGS="-DTRACCC_HAVE_ROOT"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/vecmem-cuda.xml b/scram-tools.file/tools/acts/vecmem-cuda.xml
new file mode 100644
index 00000000000..61acbafd447
--- /dev/null
+++ b/scram-tools.file/tools/acts/vecmem-cuda.xml
@@ -0,0 +1,6 @@
+<tool name="vecmem-cuda" version="@TOOL_VERSION@" revision="1">
+  <info url="github.com/acts-project/vecmem/blob/main/README.md"/>
+  <lib name="vecmem_cuda"/>
+  <use name="cuda"/>
+  <use name="vecmem"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/vecmem-rocm.xml b/scram-tools.file/tools/acts/vecmem-rocm.xml
new file mode 100644
index 00000000000..aeca8501f5d
--- /dev/null
+++ b/scram-tools.file/tools/acts/vecmem-rocm.xml
@@ -0,0 +1,6 @@
+<tool name="vecmem-rocm" version="@TOOL_VERSION@" revision="1">
+  <info url="github.com/acts-project/vecmem/blob/main/README.md"/>
+  <lib name="vecmem_hip"/>
+  <use name="rocm"/>
+  <use name="vecmem"/>
+</tool>
diff --git a/scram-tools.file/tools/acts/vecmem.xml b/scram-tools.file/tools/acts/vecmem.xml
new file mode 100644
index 00000000000..b5f722f8ce5
--- /dev/null
+++ b/scram-tools.file/tools/acts/vecmem.xml
@@ -0,0 +1,8 @@
+<tool name="vecmem" version="@TOOL_VERSION@" revision="1">
+  <info url="github.com/acts-project/vecmem/blob/main/README.md"/>
+  <lib name="vecmem_core"/>
+  <use name="acts-common"/>
+  <flags CXXFLAGS="-DVECMEM_DEBUG_MSG_LVL=0"/>
+  <flags CXXFLAGS="-DVECMEM_HAVE_PMR_MEMORY_RESOURCE"/>
+  <flags CXXFLAGS="-DVECMEM_SUPPORT_POSIX_ATOMIC_REF"/>
+</tool>